Update main.yml

Author: pietechsolution

.github/workflows/main.yml

@@ -14,7 +14,7 @@ jobs:
  run: cd $GITHUB_WORKSPACE
  - uses: actions/setup-node@v1
  with:
- node-version: "10.x"
+ node-version: "12.x"
  - name: Install deps
  run: npm install
  - name: Build docs